Online Access Free Oracle.1z1-071.v2022-04-29.q239 Practice Test (Page 30)

1z1-071 Exam Question 141

The BOOKS_TRANSACTIONS table exists in your schema in this database.
You execute this SQL statement when connected to your schema in your database instance.
SQL> SELECT * FROM books_transactions ORDER BY 3;
What is the result?

A.The execution fails unless the numeral 3 in the ORDER BY clause is replaced by a column name.

B.Only the three rows with the lowest values in the key column are displayed in the order that they are stored.

C.The first three rows in the table are displayed in the order that they are stored.

D.All table rows are displayed sorted in ascending order of the values in the third column.

1z1-071 Exam Question 142

Which two statements are true about sequences created in a single instance Oracle database? (Choose two.)

A.When the MAXVALUE limit for a sequence is reached, it can be increased by using the ALTER SEQUENCE statement.

B.DELETE <sequencename> would remove a sequence from the database.

C.The numbers generated by an explicitly defined sequence can only be used to insert data in one table.

D.CURRVAL is used to refer to the most recent sequence number that has been generated for a particular sequence.

E.When a database instance shuts down abnormally, sequence numbers that have been cached but not used are available again when the instance is restarted.

1z1-071 Exam Question 143

In which three situations does a transaction complete? (Choose three.)

A.when a PL/SQL anonymous block is executed

B.when a DELETE statement is executed

C.when a ROLLBACK command is executed

D.when a data definition language (DDL) statement is executed

E.when a TRUNCATE statement is executed after the pending transaction

1z1-071 Exam Question 144

The PRODUCTS table has the following structure.

Evaluate the following two SQL statements:
SQL>SELECT prod_id, NVL2 (prod_expiry_date, prod_expiry_date + 15, ' ') FROM products; SQL>SELECT prod_id, NVL (prod_expiry_date, prod_expiry_date + 15) FROM products; Which statement is true regarding the outcome?

A.Both the statements execute and give different results

B.Only the second SQL statement executes successfully

C.Both the statements execute and give the same result

D.Only the first SQL statement executes successfully

1z1-071 Exam Question 145

Which task can be performed by using a single Data Manipulation Language (DML) statement?

A.Adding a column constraint while inserting a row into a table.

B.Removing all data from a single column on which a unique constraint is defined.

C.Adding a column with a default value while inserting a row into a table.

D.Removing all data only from a single column on which a primary key constraint is defined.

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